Zoom, Pan and Rotate
The model can be zoomed/panned/rotated in the model Viewports in various ways. These options are available:
- at the left edge of each Viewport
- through various keyboard and mouse shortcuts
- through the View menu
- in the right-click menu as described below
Zoom
The Zoom 
option zooms in or out of the original view area in the current
Viewport. Select the icon from the current Viewport. Click and drag the
mouse up to zoom in and down to zoom out. Without selecting the icon,
you can also rotate the mouse wheel forwards to zoom in or backwards to
zoom out. This is also available from the right-click menu by selecting Zoom Mouse 
.
Zoom Fit
The Zoom Fit 
option resets the model to its default size and location in the current Viewport. To Zoom Fit all views simultaneously you can press the F2 function key or select Zoom Fit All from the right-click menu or View menu.
Zoom Window
The Zoom Window 
option allows you to zoom into any rectangular region of the current
Viewport. Select the icon from the current Viewport. Click and drag the
mouse to draw a zoom region. When you release the mouse the model view
will be zoomed to fit the drawn window size. This is also available from
the right-click menu.
Pan
The Pan 
option allows you to move the model in any direction within the current
Viewport. Select the icon from the Viewport and pan by clicking and
dragging the mouse. You can also pan by clicking the mouse wheel while
holding the Ctrl key, and the dragging the mouse. This is also available from the right-click menu.
Rotate
The Rotate 
option allows you to rotate the model within the current Viewport.
Select the icon from the Viewport and rotate by clicking and dragging
the mouse. You can also click the mouse wheel and drag the mouse to rotate. Only applicable for views in which rotation is enabled (by default the top-right view).
Reset View
The Reset View option in the right-click menu will reset rotation and zoom to the default viewing angle and size. This option is only available in one of the orthogonal views.
Exit Zoom, Pan, Rotate
To exit any of the above modes right-click and select Finish 
or click on the Zoom/Pan/Rotate icon again.
Right-Click Menus
The Zoom and Pan options are also available in the default right-click menu.